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-
- Description:
- The projected increase in the use of nanomaterials raises concerns about adverse impacts new technologies utilizing these materials may have on the environment. These concerns can be addressed from a chemical perspective by studying how emerging nanomaterials interact with biological systems. Fundamentally, the key interactions for nanomaterial uptake into a...
- Keyword:
- Nanotechnology, Sustainable, Nano/Bio, Polymers, and Biomimetic
- Subject:
- Chemistry
- Creator:
- Alicia McGeachy
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 04/09/2019
- Date Modified:
- 04/09/2019
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
-
- Description:
- High-pressure and -temperature synthesis is a powerful tool for synthesizing new intermetallic compounds that cannot be formed using traditional solid-state syntheses. Such metastable compounds can exhibit unrivaled structural complexity, unique bonding, and unusual properties. In the simplest case, there are many binary systems in which no intermetallic compounds are known....
- Keyword:
- intermetallic, properties, structure, synthesis, and high pressure
- Subject:
- Chemistry
- Creator:
- Samantha Marie Clark
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 04/03/2019
- Date Modified:
- 04/03/2019
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
-
- Description:
- The diverse reactivity patterns, unique structural features imparted by the cumulated double bonds, and possibility of axial chirality have garnered allenes considerable attention in organic synthesis. Numerous methods have been described in the literature to afford optically active allenes starting from chiral starting materials, yet catalytic and asymmetric methods to...
- Keyword:
- Allene, Asymmetric Organocatalysis, High-Throughput Screening, Hydrazone, and Petasis
- Subject:
- Chemistry
- Creator:
- Abdallah Bachir Diagne
- Owner:
- digitalpublishing@northwestern.edu
- Date Uploaded:
- 02/18/2019
- Date Modified:
- 02/18/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- The expanding use of nanomaterials in consumer products challenges scientists to understand the impact of these materials before their inevitable release into the environment. In the same way that the widespread use of DDT and asbestos has caused unforeseen negative impacts on both the environment and on human health, the...
- Keyword:
- Nanomaterials, Sum Frequency Scattering, Sum Frequency Generation, Nano-Biointerface, and Nonlinear Optics
- Subject:
- Chemistry
- Creator:
- Laura Olenick
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 01/23/2019
- Date Modified:
- 01/23/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- My research interests, which span organic, inorganic, physical and biochemistry, have focused broadly on photo-, magneto- and redox-active molecules, especially those with potential applications in organic photovoltaics, spintronics and electronics. My research under the joint supervision of Professor Wasielewski and Professor Fraser Stoddart has concentrated upon understanding electronic and magnetic...
- Keyword:
- Chemistry
- Subject:
- Chemistry
- Creator:
- Yilei Wu
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 01/16/2019
- Date Modified:
- 01/16/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- The electronic spin state (S) of metal ions is fundamental to the performance of magnets, protein cofactors, and magnetic resonance imaging (MRI) contrast agents. The ability to manipulate the spin state of transition metals allows for the development of advanced materials with emergent properties. This following chapters will introduce two...
- Keyword:
- Spin Crossover, spin state, Magnetism, MRI, Double Exchange, and Iron
- Subject:
- Chemistry
- Creator:
- Alexandra I. Gaudette
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 01/11/2019
- Date Modified:
- 01/11/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- The work presented in this dissertation examines the interplay between electron transfer reactions and electron spin in photoactive organic molecules. Organic compounds that undergo electron transfer reactions after absorbing light are important in natural photosynthesis, photobiology, and synthetic photovoltaics. These electron transfer reactions depend on the spin states of the...
- Keyword:
- electron transfer, spin chemistry, photochemistry, spectroscopy, radical pair, and EPR
- Subject:
- Chemistry
- Creator:
- Noah Elliott Horwitz
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 01/10/2019
- Date Modified:
- 01/10/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- The development of organic photovoltaic devices benefits from understanding the fundamental processes underlying charge generation in thin films of organic semiconductors. This dissertation exploits model systems of π-stacked chromophores such as perylene-3,4:9,10-bis(dicarboximide) (PDI) and 3,6-bis(aryl)diketopyrrolopyrrole (DPP) to study these processes using ultrafast electronic and vibrational spectroscopy. In particular, the characterization...
- Keyword:
- excimers, diketopyrrolopyrrole, singlet fission, transient absorption spectroscopy, and vibrational spectroscopy
- Subject:
- Chemistry
- Creator:
- Catherine McKay Mauck
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 01/09/2019
- Date Modified:
- 01/09/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- Quantum information processing (QIP) is an emerging computational paradigm with the potential to enable a vast increase in computational power, fundamentally transforming fields from structural biology to finance. QIP employs qubits, or quantum bits, as its fundamental units of information, which can exist in not just the classical states of...
- Keyword:
- Electron paramagnetic resonance, Spin physics, Spin diffusion barrier, Qubits, T2, and Quantum computation
- Subject:
- Chemistry
- Creator:
- Michael James Graham
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/22/2018
- Date Modified:
- 10/22/2018
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- The overarching goal of this work is to understand nanometer scale junctions and electron transport through molecules in these junctions. Calculations detailing quantum interference in the electron transport through molecules, and the control of these features, show great potential for use as discrete electronic elements. Concurrent work on the fabrication...
- Keyword:
- Physical Chemistry
- Subject:
- Chemistry
- Creator:
- David Quigley Andrews
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/01/2018
- Date Modified:
- 10/01/2018
- Date Created:
- 2008-06-26
- Resource Type:
- Dissertation
-
- Description:
- This work is a research effort aimed at understanding the mechanisms of single-molecule surface-enhanced Raman spectroscopy (SMSERS). In the decade since its discovery in 1997, the role of resonance Raman (RR) enhancement, the origin of blinking, and the properties of the hot spot formed at the junction of two nanoparticles...
- Keyword:
- Physical Chemistry
- Subject:
- Chemistry
- Creator:
- Jon Albert Dieringer
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 09/20/2018
- Date Modified:
- 09/20/2018
- Date Created:
- 2008-12-05
- Resource Type:
- Dissertation
-
- Description:
- The safe and efficient storage of hydrogen is possibly the chief obstacle to its use as a fuel on a large scale. Metal-organic frameworks (MOFs) are well poised to provide unique solutions to hydrogen storage, and gas storage in general, a result of their crystalline, porous networks that present the...
- Keyword:
- metal-organic frameworks, adsorption, hydrogen storage, doping, Zn paddlewheel, and heat of adsorption
- Subject:
- Chemistry
- Creator:
- Karen Lynn Mulfort
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 09/18/2018
- Date Modified:
- 09/18/2018
- Date Created:
- 2008-09-30
- Resource Type:
- Dissertation
-
- Description:
- N-Heterocyclic carbene catalysis has recently emerged as an important field in organic chemistry. Two new strategies have been developed to advance the use of N-heterocyclic carbenes (NHCs) as Lewis-base organic catalysts. The first approach utilizes NHCs to catalyze the generation of homoenolates and the conjugated Breslow intermediate is added to...
- Keyword:
- Organic Chemsitry
- Subject:
- Chemistry
- Creator:
- Audrey Chan
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 08/31/2018
- Date Modified:
- 08/31/2018
- Date Created:
- 2008-04-14
- Resource Type:
- Dissertation
-
- Description:
- Metallic nanostructures are able to confine and manipulate electromagnetic fields because light can couple to free electron oscillations called surface plasmons (SPs). These plasmons exist on metal surfaces as localized (short-range) or as propagating (long-range) modes depending upon the size and geometry of the nanostructure. This dichotomy is primarily an...
- Keyword:
- plasmon, nanoscience, nanoparticle, Metamaterials, subwavelength holes, and nanopatterning
- Subject:
- Chemistry
- Creator:
- Joel Henzie
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 08/29/2018
- Date Modified:
- 08/29/2018
- Date Created:
- 2007-12-10
- Resource Type:
- Dissertation
-
- Description:
- Understanding the nature of quantum effects in dense biological systems is of great interestto many scientists today. It seems that the question is not does quantum mechanics dictatebiological processes, but rather by how much and to what extent. A big challenge though in thisfield is how to properly test and...
- Keyword:
- Photosystem I, Stochastic Surrogate Hamiltonian, Redfield, Biology, and Quantum Mechanics
- Subject:
- Chemistry
- Creator:
- Daniel Douglas Powell
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 04/26/2018
- Date Modified:
- 04/26/2018
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- With the dual challenges of meeting global energy demand and mitigating anthropogenic climate change, significant effort is being applied to generating power from renewable sources. The dye-sensitized solar cell (DSC) is a photovoltaic technology capable of generating electricity from sunlight, but suffers losses in efficiency due to deleterious electron transfer...
- Keyword:
- Alternative Energy, Material Science, and Physical Chemistry
- Subject:
- Chemistry
- Creator:
- William L. Hoffeditz
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 03/13/2018
- Date Modified:
- 03/13/2018
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- Renewable energy technology, more so than ever before, is critical to the survival of humanity. For decades, concentrated efforts into designing and developing such novel devices resulted in the innovation of solar-driven photovoltaics that were competitive with nonrenewable alternatives. This thesis explores the dynamic behavior of alternative material candidates that...
- Keyword:
- electronic, structural, perovskite, spectroscopy, two-dimensional, and nanomaterials
- Subject:
- Physics, Chemistry, and Materials Science
- Creator:
- Panuganti, Shobhana
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_1010644 and http://dissertations.umi.com/northwestern:16703
-
- Description:
- Many processes in nature and human-made settings rely on the unique properties of charged metal oxide:aqueous interfaces. Despite their ubiquity, these buried interfaces are challenging to study, since any analytical technique aiming to overcome the relatively small number density of interfacial versus bulk species must be highly sensitive and surface-selective....
- Keyword:
- solid aqueous interface, second harmonic generation, nonlinear optical spectroscopy, metal oxide, heterodyne detection, and hematite
- Subject:
- Physical chemistry, Geochemistry, and Chemistry
- Creator:
- Lozier, Emilie
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16725 and etdadmin_upload_1012560
-
- Description:
- One of the greatest challenges in heterogeneous catalysis is the rational design and development of new catalytic systems, due to synthetic limitations in the design of solid catalysts and inhomogeneity of chemical sites at solid surfaces. This obfuscates understanding of catalyst behavior and slows improvements of processes. One approach to...
- Subject:
- Inorganic chemistry, Chemistry, and Chemical engineering
- Creator:
- Hicks, Kenton
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_996080 and http://dissertations.umi.com/northwestern:16635
-
- Description:
- Despite the increasing interest in biogenic secondary organic aerosols (SOAs), their role in the climate system remains the greatest source of uncertainty in global models. Cloud formation, critical for the net cooling effect provided by cloud cover, is dependent on the abundance of SOA particles and their ability to activate...
- Subject:
- Physical chemistry, Atmospheric chemistry, and Chemistry
- Creator:
- Bellcross, Aleia
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16628 and etdadmin_upload_993914
-
- Description:
- Metalloenzymes catalyze remarkable reactions in Nature using transition metal ions. Common earth-abundant metals like copper, iron, zinc, and magnesium catalyze reactions that are the basis of life. These metal sites lend their chemistries to facilitate these reactions, making studying the structure and properties important in understanding the enzymes' abilities and...
- Keyword:
- Metalloenzymes, Computations, Biochemistry, Physical Chemistry, Inorganic Chemistry, and Paramagnetic Spectroscopy
- Subject:
- Chemistry
- Creator:
- Jodts, Richard Jacob
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16659 and etdadmin_upload_1001514
-
- Description:
- Recent progress in semiconductor synthesis and photophysics has revealed a host of new materials with exciting properties for applications in optoelectronic devices such as sensors, photovoltaics, solid state lighting, and more. One of the most significant recent additions to the field is the class of hybrid and inorganic materials that...
- Subject:
- Physical chemistry, Chemistry, and Materials Science
- Creator:
- Cuthriell, Shelby A
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16650 and etdadmin_upload_1000360
-
- Description:
- Early transition metal organometallics chemisorbed on extremely Brønsted acidic sulfated metal oxides such as sulfated alumina (AlS) and sulfated zirconia (ZrS) produce highly active single-site catalysts for olefin polymerization, alkene and arene hydrogenation, and alkane hydrogenolysis, typically with a large percentage of catalytically significant sites. The low support conjugate basicity...
- Subject:
- Chemistry
- Creator:
- Mason, Alexander Heath
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16529 and etdadmin_upload_984243
-
- Description:
- Understanding the characteristics of interfaces between materials and solvent media such as structure, chemistry, and charge remains crucial to determining the properties and performance of numerous systems and technologies. This thesis focuses specifically on characterizing the interactions of water at oxide interfaces. A large collection of questions remains unanswered about...
- Subject:
- Chemistry
- Creator:
- Ma, Emily
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_968387 and http://dissertations.umi.com/northwestern:16438
-
- Description:
- Amyloid beta oligomers (AβOs) are a key instigator of neurodegeneration in Alzheimer’s disease (AD). The work presented in this thesis includes three disease-modifying approaches to disrupt pathological AβO-related mechanisms in AD: (1) inhibiting AβO buildup, (2) blocking AβO-induced tau phosphorylation, and (3) neutralizing AβOs. These three approaches were tested in...
- Keyword:
- Amyloid beta oligomer
- Subject:
- Chemistry
- Creator:
- Johnson, Elizabeth Anne
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16421 and etdadmin_upload_962600
-
- Description:
- Single-use plastic waste pollution will cause significant harm to the environment if left unaddressed. One possible mitigation strategy is to develop processes, e.g. catalytic hydrogenolysis, that can convert (i.e. upcycle) waste plastics into value-added products capable of participating in a circular economy. Platinum (Pt) catalysts on strontium titanate nanocuboid supports...
- Subject:
- Chemistry and Materials Science
- Creator:
- Peczak, Ian Lukasz
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16513 and etdadmin_upload_983506
-
- Description:
- Amyloid beta oligomers (AβOs) are a key instigator of neurodegeneration in Alzheimer’s disease (AD). The work presented in this thesis includes three disease-modifying approaches to disrupt pathological AβO-related mechanisms in AD: (1) inhibiting AβO buildup, (2) blocking AβO-induced tau phosphorylation, and (3) neutralizing AβOs. These three approaches were tested in...
- Keyword:
- Amyloid beta oligomer
- Subject:
- Chemistry
- Creator:
- Johnson, Elizabeth Anne
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 03/24/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16421 and etdadmin_upload_962600
-
- Description:
- A fundamental materials science question is “why and how will this material form?” The experimental,computation, and time resources necessary to answer this question consume significant resources due to the predominantly trial-and-error based approaches common in materials research. This dissertation reintroduces a number of fundamental thermodynamics-based tools for the study of...
- Keyword:
- Density Functional Theory, Aqueous Synthesis, Driving Force, Thermodynamics, Pourbaix Diagram, and Speciation
- Subject:
- Physics, Chemistry, and Materials Science
- Creator:
- Walters, Lauren Nichole
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/16/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16360 and etdadmin_upload_946544
-
- Description:
- This thesis presents results on photophysics and spin dynamics of photoactive organic molecules that possess one unpaired electron spin in the ground state and two or three unpaired spins upon photoexcitation. The excited state dynamics of the systems were studied using transient optical absorption spectroscopies and non-Boltzmann population on the...
- Subject:
- Physical chemistry and Chemistry
- Creator:
- Mao, Haochuan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/16/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_946833 and http://dissertations.umi.com/northwestern:16364
-
- Description:
- Per- and polyfluoroalkyl substances (PFAS) are man-made compounds containing multiple carbon–fluorine bonds. The unique properties of this strong bond simultaneously make PFAS useful for a number of industrial and consumer applications, toxic to living organisms, and difficult to remediate. Because the pervasive pollution of water sources with PFAS occurs at...
- Keyword:
- PFOA, degradation, PFAS, mechanism, cyclodextrin, and destruction
- Subject:
- Chemistry
- Creator:
- Trang, Brittany
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 09/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16178 and etdadmin_upload_920884
-
- Description:
- Soft functional materials are fundamentally interesting from a chemistry standpoint and have exciting applications in robotics, chemical and biomolecule sensing, and biomedical engineering. In addition, soft materials are also useful in lithography, particularly cantilever-free scanning probe lithography (CFSPL). Because of their low modulus, biocompatibility, stimuli responsiveness, malleability, and other characteristics,...
- Subject:
- Chemistry
- Creator:
- Oh, EunBi
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_844916 and http://dissertations.umi.com/northwestern:15750
-
- Description:
- The ubiquitous role of water in biochemical, electrochemical, and geochemical systems has driven scientific interest in studying the fundamental hydrogen-bonding interactions that water molecules exhibit in the presence of different materials.Specifically, we focus on the interactions characterizing water at the interface between two bulk media, as these are essential to...
- Subject:
- Chemistry
- Creator:
- Dalchand, Naomi
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_842499 and http://dissertations.umi.com/northwestern:15708
-
- Description:
- The translation of proteins as effective intracellular drug candidates is limited by the challenge of cellular entry and their vulnerability to degradation. To advance their therapeutic potential, cell-impermeable proteins can be readily transformed into protein spherical nucleic acids (ProSNAs) or encapsulated into liposomal spherical nucleic acids (L-SNAs), structures defined by...
- Keyword:
- Intracellular Delivery, Enzyme, Spherical Nucleic Acid, Cancer Vaccine, Biologic, and Blood-Brain Barrier
- Subject:
- Chemistry
- Creator:
- Kusmierz, Caroline Danielle
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15666 and etdadmin_upload_837502
-
- Description:
- Metallic conductivity and broken inversion symmetry were long thought to be contraindicated properties, under the assumption that long-range Coulombic interactions (screened by free charge carriers) were necessary for coordinated polar displacements. Within the past decade, the discovery of polar metals has prompted a rethinking of the relationship between metallicity and...
- Keyword:
- first principles, contraindicated, polar, phase, ferroelectric, and metal
- Subject:
- Physics, Chemistry, and Materials Science
- Creator:
- Hickox-Young, Daniel Timothy
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15762 and etdadmin_upload_845260
-
- Description:
- This thesis describes the synthesis and photophysical characterization of low-dimensionalmaterials—including thin-film semiconductors, colloidal quantum dots, and molecules—with the broader motivation of integrating them into mixed-dimensional heterostructures with novel responses to external stimuli. Due to their high surface area to volume ratio and incomplete dielectric screening, mixed-dimensional heterostructures have high sensitivity...
- Subject:
- Physics, Chemistry, and Materials Science
- Creator:
- Olding, Jack Nicklaus
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15691 and etdadmin_upload_840718
-
- Description:
- Nanoparticles (NPs) are emerging as attractive drug carriers in therapeutic and diagnostic applications. The physiochemical properties of NPs, such as particle size, shape, and surface chemistry, play important roles in the functions of engineered nanoconstructs−NP cores with surface ligands. Recent work has screened these properties by monitoring cellular uptake and/or...
- Subject:
- Chemistry
- Creator:
- Liu, Tingting
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_844987 and http://dissertations.umi.com/northwestern:15753
-
- Description:
- The building blocks of life are proteins. These incredible nanostructures are responsible for forming the diverse infrastructure of living systems and for performing countless biological functions. In Nature, these materials and systems achieve structural complexity and function through highly regulated and controlled assembly of protein building blocks, driven by specific...
- Keyword:
- Hierarchical, Supramolecular , Proteins, and Self-assembly
- Subject:
- Nanotechnology and Chemistry
- Creator:
- Hayes, Oliver George
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_835884 and http://dissertations.umi.com/northwestern:15660
-
- Description:
- Oligonucleotides can be used to modulate the regulation of pathological genes that are associated with various diseases. However, due to biological barriers, efficient delivery of oligonucleotides, especially to extrahepatic tissues, remains a challenge. To overcome these barriers, multiple delivery strategies have been developed, ranging from medicinal chemistry to nanotechnology. Nanoparticle-based...
- Keyword:
- surface modification, biodistribution, and spherical nucleic acids
- Subject:
- Chemistry
- Creator:
- Zhang, Wuliang
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_830130 and http://dissertations.umi.com/northwestern:15627
-
- Description:
- One of the central challenges in solid-state chemistry is synthetic control over structure. Owing to limited reactivity of Pb with transition metals at ambient pressure and high temperature as well as the variety of properties that emerge from the few known binary transition-metal–Pb compounds, this research focuses on accessing and...
- Subject:
- Chemistry and Materials Science
- Creator:
- Tamerius, Alexandra
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_845128 and http://dissertations.umi.com/northwestern:15755
-
- Description:
- In the first two decades of the 21st century, metal organic frameworks (MOFs) have attracted much attention in both fundamental-research and-industrial application areas. Derived from a vast library of both inorganic metal nodes and organic linker bridges, MOFs are crystalline materials whose structures and chemical environments can both be tuned...
- Keyword:
- Catalysis, Hierarchically porous materials, Water treatment, and Metal organic frameworks
- Subject:
- Chemistry
- Creator:
- Zhang, Furui
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_818384 and http://dissertations.umi.com/northwestern:15561
-
- Description:
- Chirality and polarity describe orthogonal mechanisms of inversion symmetry breaking, which is the origin of valuable properties in crystalline materials including nonlinear optical activity, ferroelectricity, and piezoelectricity. Noncentrosymmetric (NCS) materials have numerous applications yet opportunities remain for cooperative coupling between chiral and polar basic building units to realize high-performance materials....
- Keyword:
- chirality, inversion symmetry, and racemates
- Subject:
- Inorganic chemistry and Chemistry
- Creator:
- Nisbet, Matthew Lander
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15502 and etdadmin_upload_804610
-
- Description:
- Molecular-oriented single-site heterogeneous catalysis is a powerful approach to address the long-lasting challenge of the structure-activity relationship in catalysis, as it allows molecular level control of the catalytic centers and thus the elucidation of reaction mechanisms. In this dissertation, single-site molybdenum-dioxo species have been immobilized on carbon supports, i.e. activated...
- Keyword:
- Molybdenum-oxo, Carbon support, and Single-site heterogeneous catalysis
- Subject:
- Chemistry
- Creator:
- Li, Jiaqi
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15519 and etdadmin_upload_813943
-
- Description:
- Gold nanoparticles (AuNPs) display unique characteristics compared to their macro-counterparts that are dependent on shape, size, and attached surface molecules. Methods have been developed to precisely control both size and shape of AuNPs for specific applications. The biocompatibility, plasmonic properties, and ease of functionalization with thiolated molecules, make gold nanoparticles...
- Keyword:
- gold nanopaticles, therapeutics, DNA, cancer vaccine, and plasmonics
- Subject:
- Nanotechnology, Chemistry, and Biology
- Creator:
- Coughlin, Emma
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15532 and etdadmin_upload_815702
-
- Description:
- The lanthanides, with their limited orbital effects and high oxophilicity, represent a class of catalytic metals highly distinguished from more commonly-utilized transition metals. Homogeneous lanthanide catalysts often afford high catalytic rates and impressive selectivity. However, challenges regarding the synthesis and utilization of highly air- and water-sensitive organo-lanthanide complexes have limited...
- Keyword:
- Catalysis, Homogeneous, Lanthanide, and Hydroboration
- Subject:
- Chemistry
- Creator:
- Barger, Christopher
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15464 and etdadmin_upload_795345
-
- Description:
- This dissertation investigates the use of organic and semiconductor nanomaterials as chromophores in solar fuels production and energy transfer-mediated [2+2] cycloadditions. A series of novel N-annulated perylene chromophore amphiphiles was synthesized via a modular synthesis. These perylene amphiphiles were found to self-assemble in aqueous solution, forming extended ribbon-like nanostructures that...
- Keyword:
- cycloaddition, Nanomaterials, self-assembly, Quantum dots, Solar fuels, and photocatalysis
- Subject:
- Chemistry
- Creator:
- Nagasing, Benjamin
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_787179 and http://dissertations.umi.com/northwestern:15434
-
- Description:
- It is said across numerous disciplines, from biology to architecture to software engineering, that “form ever follows function.” This adage highlights the intimate relationship between structural characteristics and functional properties in many disparate fields of work. Here, we discuss how the catalytic activity and compressibility of metal–organic frameworks (MOFs) are...
- Keyword:
- Nanoparticle Composite, Metal-Organic Framework, Diamond Anvil Cell, High Pressure, and Acetylene Hydrogenation
- Subject:
- Chemistry
- Creator:
- Redfern, Louis
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_752781 and http://dissertations.umi.com/northwestern:15176
-
- Description:
- Total synthesis of natural products provides an avenue for investigation of complex chemical scaffolds, not only delivering access to biologically impactful molecules but also lending a deeper understanding of their inherent chemical reactivity. Expansion of reaction methodology, optimization of biological activity, and absolute structural confirmation can all be accomplished via...
- Keyword:
- allene, total synthesis, peptide, traceless Petasis reaction, natural product, and organic synthesis
- Subject:
- Organic chemistry and Chemistry
- Creator:
- Rote, Jennifer
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15164 and etdadmin_upload_750061
-
- Description:
- Cyclodextrin-based polymers (CDPs) are adsorbents based on supramolecular receptor chemistry and have emerged as a promising technology for organic micropollutant remediation. Micropollutants are small organic molecules which contaminate water systems from human related activities. The occurrence of micropollutants in water sources is associated with many negative health, economic, and ecological...
- Keyword:
- micropollutants, Purification, polyfluoroalkyl, Water, porous, and Cyclodextrin
- Subject:
- Organic chemistry, Polymer chemistry, and Chemistry
- Creator:
- Klemes, Max Justin
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15146 and etdadmin_upload_744718
-
- Description:
- This dissertation describes the study of photoinduced charge transfer between QDs and molecular acceptors as a probe of the defects within ligand shells of QDs and as means to photocatalyze redox reactions. For charge transfer reactions to occur between QDs and molecules in bulk solution, the molecules must interact with...
- Keyword:
- Quantum dots, Photoredox, Photochemical deprotection, Fluorinated ligands, and Surface chemistry
- Subject:
- Physical chemistry and Chemistry
- Creator:
- Perez, Kaitlyn
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15131 and etdadmin_upload_743985
-
- Description:
- Over the past 15 years, there have been significant developments in expanding the singlet fission (SF) library and understanding the SF mechanism. SF has been a topic of interest in recent years due to its potential applications in organic photovoltaics. During SF, a singlet exciton energetically down-converts into two triplet...
- Subject:
- Physical chemistry and Chemistry
- Creator:
- Chen, Michelle
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_768182 and http://dissertations.umi.com/northwestern:15313
-
- Description:
- Part I: Design of Photo-Responsive Molecules towards Biomedical ApplicationsThe use of light to control systems provides numerous advantages such as spatiotemporal precision, non-invasive penetration, and precise energy input. Specifically, molecules that undergo photoinduced cleavage, photoremovable protecting groups (PPGs) have emerged as an active area of research due to their broad...
- Subject:
- Polymer chemistry, Chemistry, and Materials Science
- Creator:
- Wang, Xiaodi
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15393 and etdadmin_upload_780358
-
- Description:
- The discovery of abundant reserves of shale gas over this past decade has reshaped the world’s energy landscape. It has renewed interests in the activation and conversion of methane as well as other light alkanes. While the oxidative coupling of methane (OCM) and oxidative dehydrogenation (ODH) of ethane and propane...
- Keyword:
- methane, ethane, sulfur, ethylene, and mechanism
- Subject:
- Chemistry
- Creator:
- LIU, SHANFU
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15196 and etdadmin_upload_756397
-
- Description:
- Thermoelectric modules that convert heat into electrical energy are attractive for improving global energy management. This thesis reports the synthesis and characterization of two new families of lead and tin chalcogenide alloys and focuses on the impact of the grain boundaries, phase segregation, and atomic vacancies on the electronic and...
- Keyword:
- Solid state chemistry, Thermoelectrics, Charge transport, Material science, and Thermal transport
- Subject:
- Inorganic chemistry and Chemistry
- Creator:
- Slade, Tyler John
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_740640 and http://dissertations.umi.com/northwestern:15071
-
- Description:
- Molecules are highly social: they recognize one another and form bonds with those they are attracted to and repel those they are not. Some molecules establish strong bonds, while others form weak, transient associations. These interactions are ubiquitous in Nature and are integral to life. For at the basis of...
- Keyword:
- Supramolecular chemistry, Weak-Link Approach, Organometallic chemistry, and Coordination chemistry
- Subject:
- Chemistry
- Creator:
- d'Aquino, Andrea
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/28/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14962 and etdadmin_upload_712493
-
- Description:
- Neurons are sensitive to the mechanical properties of their environment and show better growth, survival and differentiation when they are cultured in soft environments with mechanical properties similar to those of the brain compared to other tissues. Within the central nervous system (CNS), there is also a range of mechanical...
- Keyword:
- Hydrogels, Peptide amphiphiles, Mechanical properties, aza-glycine, Neurons, and Supramolecular
- Subject:
- Chemistry, Biomedical engineering, and Neurosciences
- Creator:
- Godbe, Jacqueline M
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/28/2020
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15006 and etdadmin_upload_719165
-
- Description:
- Organic solar cells (OSC) are a next generation solar energy technology that offers the advantages of scalable fabrication, light weight, flexibility, and earth-abundant starting materials. Despite tremendous advances in OSC power conversion efficiency (PCE) over the last decade, active layer material selection and optimization is still largely empirical. In order...
- Keyword:
- Small molecule, Non Fullerene, Crystal Structure, Photovoltaic, and Organic solar Cells
- Subject:
- Chemistry, Materials Science, and Energy
- Creator:
- Swick, Steven Mitomu
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/28/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14961 and etdadmin_upload_712474
-
- Description:
- Increasing industrialization and the resulting negative environmental impacts highlight the need to develop alternative renewable energy sources. The Sun is a massive source and organic solar cells are a growing field of study. As new materials are synthesized, the efficiencies of organic solar cells continue to grow, but without an...
- Keyword:
- x-ray scattering, transient absorption, and organic solar cell
- Subject:
- Physical chemistry, Chemistry, and Materials Science
- Creator:
- Lou, Sylvia Jen-Ming
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_626768 and http://dissertations.umi.com/northwestern:14458
-
- Description:
- This work combines the use of high-throughput mass spectrometry with peptide arrays for to monitor reactions on peptides. The Mrksich lab introduced a high-throughput, label-free, biochemical assay that relies on self-assembled monolayers on gold and matrix-assisted laser desorption/ionization mass spectrometry, termed SAMDI-MS. This dissertation introduces new applications of SAMDI-MS and...
- Keyword:
- High-throughput, SAMDI, Phosphatase, Mass spectrometry, and Peptide Arrays
- Subject:
- Chemistry and Biochemistry
- Creator:
- Szymczak, Lindsey Catherine
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14701 and etdadmin_upload_667038
-
- Description:
- Hybrid Organic-inorganic halide perovskites are emerging semiconducting materials that have shown over 23% in power conversion efficiency (PCE) for solar cells. The most prominent materials, three-dimensional (3D) perovskites, have limited scope for structural engineering and exhibit instability when encounter with moisture and heat. Here, we focus on studying the structure-property...
- Keyword:
- Inorganic, Optoelectronics, and Hybrid Perovskite
- Subject:
- Chemistry
- Creator:
- Mao, Lingling
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_625542 and http://dissertations.umi.com/northwestern:14439
-
- Description:
- Metal-organic frameworks (MOFs) are a class of highly modular materials with welldefined three-dimensional architectures, permanent porosity, and diverse chemical functionalities, which show promise for a wide range of applications, including gas storage and separation, drug delivery, chemical sensing, and catalysis. Nanoparticle forms of MOFs have similar properties but are dispersible...
- Keyword:
- DNA, Nanoparticle, Colloidal crystal engineering, Surface functionalization, and Metal-organic framework
- Subject:
- Chemistry
- Creator:
- Wang, Shunzhi
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14463 and etdadmin_upload_626973
-
- Description:
- Photovoltaic devices containing organic semiconducting chromophores are a promising technology for the conversion of solar energy into electricity. Research into the molecular design and processing of these materials has propelled the power conversion efficiency of laboratory-fabricated organic polymer solar cells (PSCs) to over 17%, which exceeds the 10% threshold deemed...
- Keyword:
- Green Chemistry, Conjugated Copolymers, Organic Semiconductors, Organic Solar Cells, Electron Acceptors, and Photovoltaics
- Subject:
- Chemistry
- Creator:
- Aldrich, Thomas Jordan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14528 and etdadmin_upload_639853
-
- Description:
- The invention of GdIII-based magnetic resonance imaging (MRI) probes substantially expanded the capability of MRI in visualizing details in tissue. Building upon the achievement of GdIII-based complexes, more ideal probes should feature contrast that is responsive to biomarkers, such as redox status and ion concentrations. The abnormality of these biomarkers...
- Keyword:
- Responsive probes, PARACEST, Paramagnetic NMR, MRI contrast agents, Inorganic Chemistry, and Bioinorganic Chemistry
- Subject:
- Chemistry
- Creator:
- Du, Kang
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14394 and etdadmin_upload_615839
-
- Description:
- Recent advances in combinatorial chemistry, synthetic biology, and ‘omics’ research require high-throughput methods for performing and analyzing thousands to millions of reactions in one day. However, it is a challenge to engineer high-throughput systems that can autonomously conduct and analyze such a large number of reactions in a generalizable and...
- Keyword:
- Self-assembled monolayers, Kinetics, Spatiotemporal, SAMDI Mass Spectrometry, MALDI Imaging Mass Spectrometry, and Microfluidics
- Subject:
- Bioengineering, Chemistry, and Chemical engineering
- Creator:
- Grant, Jennifer
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14444 and etdadmin_upload_625853
-
- Description:
- While Li-ion batteries are currently the preferred energy storage technology, multivalent alternatives such as Mg should be considered. Magnesium metal has a high volumetric capacity and has been shown to cycle with no dendrite formation. However, the highly charged Mg2+ ion cannot easily diffuse into the oxide cathodes favored in...
- Keyword:
- Solid State Chemistry, Multivalent Batteries, Magnesium Cathodes, and Hydrothermal Synthesis
- Subject:
- Inorganic chemistry and Chemistry
- Creator:
- Wustrow, Allison
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_662066 and http://dissertations.umi.com/northwestern:14625
-
- Description:
- Polyolefins are the most versatile and widely used polymers worldwide. Depending on the polymer microstructure, polyolefins can exhibit a wide range of useful and tailored properties and applications. Metal-catalyzed coordinative olefin polymerization plays a center role in advancing polyolefin synthesis. This dissertation explores two strategies to modulate the polymer microstructures...
- Keyword:
- scandium, olefin polymerization, zirconium, bimetallic effect, and polar monomer
- Subject:
- Inorganic chemistry and Chemistry
- Creator:
- Chen, Jiazhen
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14719 and etdadmin_upload_669232
-
- Description:
- Spherical Nucleic Acids (SNAs) are unique class of nanomaterial characterized by a dense nucleic acid shell conjugated to a nanoparticle core. This radial orientation of oligonucleotides and architecture distinguishes SNAs from the components from which they are comprised. Specifically, unique chemical and biological properties emerge that are not observed with...
- Keyword:
- Spherical Nucleic Acid, Nanoparticle, Immune system, Toll-like receptors, and Biodistribution
- Subject:
- Nanotechnology, Chemistry, and Immunology
- Creator:
- Ferrer, Jennifer R
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14715 and etdadmin_upload_668701
-
- Description:
- Harnessing the metabolic potential of methanotrophic bacteria is a compelling strategy for the bioremediation of environmentally harmful methane gas. Methanotrophs can activate a 105 kcal/mol C-H bond in methane at ambient conditions using metalloenzymes called methane monooxygenases (MMOs). Particulate methane monooxygenase (pMMO) is a copper-dependent, membrane-bound enzyme that is the...
- Keyword:
- copper, methane, methanotroph, metalloenzyme, particulate methane monooxygenase, and membrane protein
- Subject:
- Microbiology, Chemistry, and Biochemistry
- Creator:
- Ro, Soo Yeon
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14705 and etdadmin_upload_667719
-
- Description:
- The work of this dissertation seeks to enhance the understanding of DNA-driven nanoparticle assembly and introduce kinetic routes to control mesoscale crystal habit and size. Chapter 1 describes the state of the art in the field of nanoparticle assembly and, specifically, DNA- mediated nanoparticle assembly, where the concept of a...
- Keyword:
- Single Crystal, Nanoparticle, Nucleation and Growth, Crystallization, , DNA, and Self-Assembly
- Subject:
- Chemistry
- Creator:
- So Young Eileen Seo
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 11/25/2019
- Date Modified:
- 11/25/2019
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
-
- Description:
- In this dissertation, efforts are detailed to utilize semiquinoid bridging ligands to impart strong magnetic coupling between metal centers. Chapter 1 introduces the synthetic challenge of realizing molecule-based magnets with high operating temperatures due to weak magnetic coupling between spin centers through large, diamagnetic ligands. An alternative strategy is described...
- Keyword:
- Inorganic chemistry
- Subject:
- Chemistry
- Creator:
- Jordan DeGayner
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/14/2019
- Date Modified:
- 10/14/2019
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
-
- Description:
- Synthetic organic chemistry continues to be a driver in the discovery and development of new molecules for applications in biology, medicine, crop science, polymer science, and materials science. Central to the continued development of this field is the pursuit of new strategies and methods for the efficient construction of molecules...
- Keyword:
- Radical Coupling, Umpolung, Brook Rearrangement, Silymarin, Photoredox, and Photocatalysis
- Subject:
- Chemistry
- Creator:
- Benjamin McDonald
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/08/2019
- Date Modified:
- 11/19/2019
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
-
- Description:
- Nonlinear optical (NLO) effects are used universally in modern day telecommunication and form the foundation of emergent photonic technologies. Twisted intramolecular charge transfer (TICT) chromophores, composed of a donor and acceptor fragment connected by a twisted bi-aryl bridge, combine large molecular NLO response with properties such as transparency in the...
- Keyword:
- hyperpolarizability, electro optics, Nonlinear optics, charge transfer, and aggregation
- Subject:
- Chemistry
- Creator:
- Alexander Lou
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/08/2019
- Date Modified:
- 10/08/2019
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
-
- Description:
- The thermodynamics and kinetics of electron transfer reactions in catalysis, energy conversion and storage, and plasmon-driven chemistry depend strongly on nanoscale electrode surface structure. To elucidate the structure-function relationships that determine nanoscale electrochemical reactivity, it is necessary to observe electron transfer reactions one molecule at a time. Over the past...
- Keyword:
- Nanoscale Electrochemistry and Tip-Enhanced Raman Spectroscopy
- Subject:
- Chemistry
- Creator:
- Michael Mattei
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/08/2019
- Date Modified:
- 10/08/2019
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
-
- Description:
- Spherical nucleic acids (SNAs) are a class of structures composed of spherical nanoparticle cores that are densely functionalized with radially oriented, linear DNA. SNAs exhibit properties that are distinct from those of their linear counterparts. These constructs can readily enter cells, evade nuclease degradation, and bind complementary DNA targets with...
- Keyword:
- Nanoparticles, DNA, Hybridization, Thermodynamics, and Synthesis
- Subject:
- Chemistry
- Creator:
- Lam-Kiu Fong
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 09/30/2019
- Date Modified:
- 09/30/2019
- Date Created:
- 1/1/2018
- Resource Type:
- Dissertation
-
- Description:
- Fused polycyclic scaffolds with three-dimensional complexity from an array of stereocenters compose the core structures of countless natural product families with a variety of desirable biological activity. The development of synthetic methods and strategies to afford rapid access to these structures is essential to expose a wealth of untapped biological...
- Keyword:
- Organic Chemistry
- Subject:
- Chemistry
- Creator:
- Emily Elizabeth Robinson
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 05/06/2019
- Date Modified:
- 05/06/2019
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
-
- Description:
- Organic Photovoltaic (OPV) materials are of great interest as a low-cost material the purposes of achieving wide spread, solar energy adoption. However, a limiting factor in materials development is the ability to proactively determine the active layer thin film morphology that largely informs device performance. Thus, understanding how materials design...
- Keyword:
- x-ray scattering, spin coating, in situ, GIWAXS, organic photovoltaics, and morphology
- Subject:
- Chemistry
- Creator:
- Eric Fridstein Manley
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 04/29/2019
- Date Modified:
- 04/29/2019
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
-
- Description:
- Organic Photovoltaic (OPV) materials are of great interest as a low-cost material the purposes of achieving wide spread, solar energy adoption. However, a limiting factor in materials development is the ability to proactively determine the active layer thin film morphology that largely informs device performance. Thus, understanding how materials design...
- Keyword:
- x-ray scattering, spin coating, in situ, GIWAXS, organic photovoltaics, and morphology
- Subject:
- Chemistry
- Creator:
- Eric Fridstein Manley
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 04/29/2019
- Date Modified:
- 04/29/2019
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
-
- Description:
- Noncentrosymmetry (NCS) is a requirement for many properties such as piezoelectricity, pyroelectricity, and nonlinear optical activity like second harmonic generation which are desirable for a variety of commercial applications. One method which has been employed to successfully synthesize NCS compounds utilizes acentric anionic groups, such as oxyfluoride metal complexes, as...
- Keyword:
- noncentrosymmetry, crystallography, hydrogen bonding, and oxyfluorides
- Subject:
- Chemistry
- Creator:
- Jacqueline Renee Cantwell
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 04/03/2019
- Date Modified:
- 04/03/2019
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
-
- Description:
- The discovery and tailoring of new useful organic molecules for applications such as medicine and materials science is highly driven by meaningful developments in chemical methodology, and some of the most impactful advances have invoked catalysis to increase efficiency and specificity. N-heterocyclic carbenes (NHCs) have continuously occupied a prominent space...
- Keyword:
- N-Heterocyclic Carbene, borylation, NHC, boration, aminoboronic acids, and enantioselective catalysis
- Subject:
- Chemistry
- Creator:
- Charles Benjamin Schwamb
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 02/15/2019
- Date Modified:
- 02/15/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- Photovoltaic technology can help meet the exploding world energy demand in a sustainable and environmentally friendly way. Organic photovoltaics (OPVs) are especially attractive because they can be constructed with low-cost organic content and are amenable to high-throughput large-scale fabrication techniques. Synthetic modification of organic semiconductors has paved way for the...
- Keyword:
- Chemistry
- Subject:
- Chemistry
- Creator:
- Amod Timalsina
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 01/18/2019
- Date Modified:
- 01/30/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- Starting materials for natural products, ideally synthesized using low-cost, highly active and selective catalysts, are of great interest to the pharmaceutical industry. Relevant reactions include the synthesis of 1,2-dihydropyridines, reduction of ketones/aldehydes, cleavage of esters, and reduction of amides to amines. Hydroelementation is an important catalytic process that involves H-E...
- Keyword:
- Carbonyl reduction, Catalysis, Pyridine dearomatization, Hydroboration, and Organolanthanide
- Subject:
- Chemistry
- Creator:
- Victoria Lynn Weidner
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 01/11/2019
- Date Modified:
- 01/30/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- Small hydrocarbons and their oxygenated derivatives are critical to atmospheric organic aerosol formation and growth. Secondary organic aerosols (SOAs) constitute a significant portion of total atmospheric organic aerosols, and are often generated through the oxidation of biogenic volatile organic compounds (VOCs) such as isoprene, -pinene, and -caryophyllene. Interfaces of SOA...
- Keyword:
- aerosol, hydrocarbons, orientations, nonlinear optics, and computation
- Subject:
- Chemistry
- Creator:
- Hilary Marie Chase
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 01/11/2019
- Date Modified:
- 01/11/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- Contained in the following dissertation are detailed investigations regarding the thermodynamics of small molecule activation by metalloporphyrin complexes isolated within metal-organic frameworks (MOFs). Chapter 1 provides a description of the role metalloporphyrin complexes play in biological systems and the challenges associated with studying small molecule activation by metalloporphryin sites in...
- Keyword:
- Inorganic Chemistry
- Subject:
- Chemistry
- Creator:
- Audrey Theresa Gallagher
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 01/10/2019
- Date Modified:
- 01/10/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- Chemical probes are versatile and unique tools for biomedical research. A chemical probe is simply a selective small-molecule modulator of protein function that allows the user to ask mechanistic and phenotypic questions about its molecular target in biochemical, cell-based or animal studies. Experiments involving selective inhibitors can help delineate key...
- Keyword:
- small molecules, kinases, chemical biology, isoforms, and natural product
- Subject:
- Chemistry
- Creator:
- Kristine Deibler
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 01/10/2019
- Date Modified:
- 01/29/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- This dissertation describes the fundamental studies of photoinduced charge-carrier transfer from colloidal metal chalcogenide quantum dots (QDs) to surface-adsorbed molecular redox partners. In addition, we also present the use of visible-light absorbing QDs in photocatalytic applications. CdS QDs are used as photocatalysts in a C-C coupling reaction, in which no...
- Keyword:
- Quantum Dots, Electron Transfer, Carrier Dynamics, and Photocatalysis
- Subject:
- Chemistry
- Creator:
- Kedy Edme
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 01/09/2019
- Date Modified:
- 01/09/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- Three-dimensional (3D) and two-dimensional (2D) hybrid halide perovskites have emerged as front-runners in solar energy conversion applications with the potential to provide low-cost renewable energy. Being at the interface of chemistry, physics, materials science, and electrical engineering, the field of perovskite solar cells has become a top area of interest...
- Keyword:
- solar cells and perovskite
- Subject:
- Chemistry
- Creator:
- Chan Myae Myae
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/28/2018
- Date Modified:
- 01/29/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- Bulk heterojunction (BHJ) organic photovoltaic (OPV) devices have been extensively studied to achieve power conversion efficiencies well above 10%. New research into alternative materials that allow for cheaper and more industrially viable fabrication of flexible solar cells has been at the forefront of the energy field for the past few...
- Keyword:
- organic solar cells, molecular weight, nonfullerenes, aggregation, and crystallinity
- Subject:
- Chemistry
- Creator:
- Nicholas Dalton Eastham
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/26/2018
- Date Modified:
- 01/29/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- Plasmonic chemistry is an emerging field of research that contains great promise for new chemical reactivity, but thus far has been improperly observed. The goals of using plasmonic chemistry typically revolve around the use of nonequilibrium charge carriers that migrate to the surface of a plasmonic substrate to perform redox...
- Keyword:
- Physical Chemistry
- Subject:
- Chemistry
- Creator:
- Michael O. McAnally
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/21/2018
- Date Modified:
- 10/21/2018
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- The tools of computational chemistry allow researchers to gain insight into chemical systems that would be difficult or impossible to gain experimentally. This dissertation discusses the application of several of these computational tools to chemical systems of interest. First, we present several studies of plasmon resonance in Ag nanoclusters using...
- Keyword:
- Subsurface hydrogen, Plasmons, Surface doping, Black phosphorus, and Nanoclusters
- Subject:
- Chemistry
- Creator:
- Adam Patrick Ashwell
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/21/2018
- Date Modified:
- 04/25/2019
- Date Created:
- 2017-01-01
- Resource Type:
- Dissertation
-
- Description:
- The nonlinear optical technique, second harmonic generation (SHG), is applied here for the first time to probe single and double strand DNA (ssDNA and dsDNA) chemically attached to fused quartz/water interfaces. DNA interfaces are often a critical functional component of biodetection, thus, the development of molecular biosensors requires a thorough...
- Keyword:
- biosensors, chirality, second harmonic generation, nonlinear optics, interfaces, and DNA
- Subject:
- Chemistry
- Creator:
- Faith Christianna Boman
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/08/2018
- Date Modified:
- 10/08/2018
- Date Created:
- 2008-12-09
- Resource Type:
- Dissertation
-
- Description:
- Many metal ions are of critical importance in many cellular functions. The very properties of these metal ions that make them useful also make them toxic to the cell. In the course of evolution, many metal ion homeostasis systems have developed to provide balance between the necessity and toxicity of...
- Keyword:
- Inorganic Chemistry
- Subject:
- Chemistry
- Creator:
- Lydia Finney
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/03/2018
- Date Modified:
- 10/03/2018
- Date Created:
- 2008-10-08
- Resource Type:
- Dissertation
-
- Description:
- The focus of this thesis is the design of non-natural molecules for use in biological applications. Chapter one details a strategy to use small molecules to reactivate mutated p53, an oncoprotein that is prevalent in several types of cancer, back to its wild-type function. Wild-type p53 has the ability to...
- Keyword:
- Organic Chemistry
- Subject:
- Chemistry
- Creator:
- Jaclyn Iera
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/03/2018
- Date Modified:
- 10/03/2018
- Date Created:
- 2008-06-19
- Resource Type:
- Dissertation
-
- Description:
- This thesis discusses the synthesis, self-assembly, and conductivity properties of novel oligothiophene derivatives with an emphasis on how molecular structure effects the assembly. In order to facilitate self-assembly in conjugated molecules, specific non-covenant forces were included into the molecular design of several derivatives. First, an amphiphilic oligothiophene derivative consisting of...
- Keyword:
- organogel, oligothiophene, conductivity, Self-Assembly, and hydrogel
- Subject:
- Chemistry
- Creator:
- David Alfred Stone
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/02/2018
- Date Modified:
- 10/02/2018
- Date Created:
- 2008-12-05
- Resource Type:
- Dissertation
-
- Description:
- The work described in this dissertation focuses on the development of a general approach to create nanoscale transition metal chalcogenide materials and new methods for controlling architecture of gold pyramidal structures. In the former, we used chemical nanofabrication, a combination of top-down patterning and bottom-up solid-state synthesis, to achieve control...
- Keyword:
- transition, metal, nanofabrication, and chalcogenide
- Subject:
- Chemistry
- Creator:
- Christopher Leo Stender
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/02/2018
- Date Modified:
- 10/02/2018
- Date Created:
- 2008-12-05
- Resource Type:
- Dissertation
-
- Description:
- <span style="font-family: Calibri;">BaNa-Y is a catalyst for reduction of nitrogen oxides (NO and NO<sub>2</sub>) with added reductants at temperatures of ~200 °C. Studies were performed over BaNa-Y and related catalysts to unravel the roles that nitrates and nitrites play in determining the processes and pathways involved in NOx reduction. <o:p></o:p></span></p>...
- Keyword:
- BaNa-Y, Catalysis, Kinetics, DeNOx, Nitrates, and NOx Reduction
- Subject:
- Chemistry
- Creator:
- Aditya Savara
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/02/2018
- Date Modified:
- 10/02/2018
- Date Created:
- 2008-12-08
- Resource Type:
- Dissertation
-
- Description:
- Magnetic Resonance Imaging is a non-invasive modality that allows for deep-tissue imaging. Contrast agents decrease image acquisition time and increase the intrinsic contrast between different types of tissue. A new family of enzyme-activated contrast agents is emerging that has the ability to report on enzymatic processes in vivo. Towards this...
- Keyword:
- Inorganic Chemistry
- Subject:
- Chemistry
- Creator:
- Bradley Douglas Ulrich
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/02/2018
- Date Modified:
- 10/02/2018
- Date Created:
- 2008-12-03
- Resource Type:
- Dissertation
-
- Description:
- In this work several self-assembling PA systems containing covalent-linking functionalities have been investigated. These covalently linkable PAs were designed to probe the supramolecular structure by covalent capture of the nanofibers and also improve the mechanical stiffness of the gel-material. The diacetylene motif was the main functional group investigated because of...
- Keyword:
- Organic Chemistry
- Subject:
- Chemistry
- Creator:
- Lorraine Hsu
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/02/2018
- Date Modified:
- 10/02/2018
- Date Created:
- 2008-12-08
- Resource Type:
- Dissertation
-
- Description:
- Polyvalent oligonucleotide functionalized gold nanoparticle conjugates (DNA-AuNPs) possess unusual properties, which derive from their particle and oligonucleotide subunits as well as their three-dimensional architectures. This dissertation explores the role each chemical component plays in the conjugate's architecture and assembly and recognition capabilities. It also describes their application as probes in...
- Keyword:
- Inorganic Chemistry
- Subject:
- Chemistry
- Creator:
- Haley Diana Hill
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/02/2018
- Date Modified:
- 10/02/2018
- Date Created:
- 2008-12-08
- Resource Type:
- Dissertation
-
- Description:
- This thesis focuses on the design of hybrid organic materials comprising polymers and small molecules for biodiagnostic and electronic applications. Specifically, the electrochemical and fluorescent signaling properties of terthiophene-functionalized polymers are combined with the enhanced recognition properties of DNA hybrid materials, culminating in the development of a "loaded" probe for...
- Keyword:
- Hybrid Materials, DNA, Thiophene, Detection, Polymer Nanoparticles, and Conducting Polymers
- Subject:
- Chemistry
- Creator:
- Brian Richard Stepp
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/01/2018
- Date Modified:
- 10/01/2018
- Date Created:
- 2008-12-05
- Resource Type:
- Dissertation
-
- Description:
- π-Conjugated oligomeric and polymeric semiconductors have been the focus of intense research over the past few decades as alternatives to inorganic semiconductors for low-cost electronic applications such as organic field-effect transistors (OFETs). These materials enable vapor- or solution-phase fabrication of large-area, light-weight electronic devices, and are compatible with plastic substrates...
- Keyword:
- Organic Chemistry
- Subject:
- Chemistry
- Creator:
- Hakan Usta
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 10/01/2018
- Date Modified:
- 10/01/2018
- Date Created:
- 2008-12-05
- Resource Type:
- Dissertation
-
- Description:
- The utilization of hydrofluoric acid for the preparation of silver vanadium oxide fluorides has been advanced for the synthesis of Ag<sub>4</sub>V<sub>2</sub>O<sub>6</sub>F<sub>2</sub> and Ag<sub>3</sub>VO<sub>2</sub>F<sub>4</sub>. Silver-rich metal oxide fluorides are important battery cathode materials due to the high reduction potential of silver vs. Li, which is made even higher by the incorporation...
- Keyword:
- Chemistry
- Subject:
- Chemistry
- Creator:
- Thomas Allen Albrecht
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 09/20/2018
- Date Modified:
- 09/20/2018
- Date Created:
- 2008-12-03
- Resource Type:
- Dissertation
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